142393813 has 2 divisors, whose sum is σ = 142393814. Its totient is φ = 142393812.

The previous prime is 142393807. The next prime is 142393829. The reversal of 142393813 is 318393241.

142393813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139759684 + 2634129 = 11822^2 + 1623^2 .

It is a cyclic number.

It is not a de Polignac number, because 142393813 - 2⁹ = 142393301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142393843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71196906 + 71196907.

It is an arithmetic number, because the mean of its divisors is an integer number (71196907).

Almost surely, 2^142393813 is an apocalyptic number.

It is an amenable number.

142393813 is a deficient number, since it is larger than the sum of its proper divisors (1).

142393813 is an equidigital number, since it uses as much as digits as its factorization.

142393813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 142393813 is about 11932.8878734362. The cubic root of 142393813 is about 522.1921912831.

The spelling of 142393813 in words is "one hundred forty-two million, three hundred ninety-three thousand, eight hundred thirteen".